Wristband controller



FIG. 1 is a front elevation view of a wristband controller;

FIG. 2 is a back elevation view of the wristband controller;

FIG. 3 is a left side elevation view of the wristband controller;

FIG. 4 is a right side elevation view of the wristband controller;

FIG. 5 is a bottom elevation view of the wristband controller;

FIG. 6 is a top front perspective view of the wristband controller; and,

FIG. 7 is a bottom perspective view of the wristband controller; 

CLAIM I claim the ornamental design for a wristband controller, as shown and described. 